Where does a lamp get light energy from?* nuclear energy
O electrical energy
O chemical energy
O mechanical energy

From center station, a train departs every 30 minutes on the fast line and a train departs every 50 minutes on the state line. if two trains depart from center station at 8: 00 a.m., one on each of the two lines, what is the next time that two trains, one on each line, will depart at the same time?

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?